Blocks water, resists freeze-thaw
Forms a dense film that seals pores and blocks water, with residual -NCO bonding chemically to asphalt, improving moisture and freeze-thaw resistance of cold mixes.
Zhou, Xiaowei · Wang, Zhenjun · Guo, Haoyan · Xu, Xu · Wang, Xiaofeng · Zhang, Bolun · Liu, Jianfei · Wan, Chenguang
Journal of Cleaner Production 2024
Reduced water absorption
Reduced wear loss
At optimum NCO/OH=1.25, mixture shows good resistance to water damage, freeze-thaw cycles, and good volume stability